Rim: CONTEC hollow chamber "Exit", 28"/29", 21-622, height: 16.2 mm, 32 holes, SV valve, for disc brakes., 28"/29", 21-622, height: 16.2 mm, 32 holes, SV valve, for disc brakes, single eye, max. system weight 150 kg, suitable for E-bikes, black (0.349.817/3) Hub: CONTEC cassette rear hub "Core DB"., 32 holes, 8-/9-/10-/11-speed Shimano HG-M mounting (MTB), 12 mm thru axle, 142 mm installation width, 6-hole disc brake mounting, black (0.747.623/1) Spokes: ALPINA2 mm stainless steel, black, 294 / 292 mm The Exit Core 21 29" Rear wheel with SHIMANO HG freewheel body will impress you with its enormous resistance to the large and small challenges on your daily routes. With a permissible load of up to 150 kg system weight, our wheel has enough reserves for a lot of luggage, heavy Fahrers and heavy e-bikes. The aluminum rear hub with 6-hole/IS brake disc mounting and 12 mm thru axle has a proven solid design for as little as possible maintenance. The freewheel body for Shimano HG is made of robust CrMo steel for particularly high durability. 32 serrated 2 mm stainless steel spokes also guarantee a high load capacity and therefore the durability of this wheel. With an inner rim width of 21 mm, the Exit Master rim is ideal for all common city, trekking and MTB tires with widths from 35 to 62 mm. All CONTEC wheels are manufactured in our wheel factory. Hoya/Lower Saxony (Germany) assembled by experienced specialists and perfectly centered for you using the latest technology. Axle thru axle 12 mm Spoke diameter 2.00 mm Freewheel body HG Main color black Installation width 142.0 mm Application range MTB Hub color black Spoke color black Rim color black Spoke material Stainless steel Rear wheel mounting Brake system for disc brake, 6-hole shifting system 8-speed 9-speed, 10-speed, 11-speed Spoke length left 294 mm Spoke length right 292 mm Type/type Item Design hollow chamber For wheel yes Wheel size 29 "